Leave the skins on the apples--they contribute flavor, body, nutrients, and fiber! Include some red apples in the mix and your filling will be a lovely, rosy color. If you're in a hurry, skip the apricots and oranges. The crisp is terrific warm or at room temperature, but it is especially flavorful cold, even after three or four days in the fridge (if it lasts that long!).Leave the skins on the apples because they add flavor,texture, nutrients, and healthy fiber.